Wire tie device

ABSTRACT

An inverted channel-shaped guide is detachably supported on the under face of the upper platen of a baling press. The guide is arranged to guide one preformed looped end of a bale tie wire to a knotting position in the guide while the platen is in raised inactive position and to guide the other preformed end loop of the wire into a knotting position with respect to the first looped end when the platen is in baling position. Upon initially raising the platen and guide a short distance from the bale the expansion of the bale tensions the wire and pulls the interengaged looped ends in a direction away from each other, thereby drawing them into a knot. Upon raising of the platen clear of the bale, the guide is released from the knotted wire. The first one of the looped ends is inserted in the guide axially of the wire from one end and the looped end is guided by interior wall portions of the guide while the adjacent portion of the wire is held magnetically, by means of permanent magnets carried by the guide, for axial movement in the inserting direction while being permitted thereby to adjust about its axis. A dump door is arranged at the open side of the guide at the knotting position. The door is spring biased to a closed position in which a cam and notch on its upper surface engage the first preformed looped end as it moves into the knotting position and prevents movement of the wire opposite to the direction of insertion. The door is opened downwardly against the force of its biasing spring by the looped ends of the wire as the looped ends are being drawn tightly into a knot and the wire, due to axial tension imposed by the bale, is being moved downwardly toward the bale at and adjacent its knotted ends. When the platen and guide are lifted clear of the bale, the guide releases fully from the wire and the dump door is reclosed by its spring.

Unites Trumbo States Patent [191 [451 Feb. 4, 1975 WIRE TIE DEVICE [76]Inventor: Cecil Dale Trumbo, 13122 Flint Dr.,

Santa Ana, Calif. 92705 [22] Filed: July 30, 1973 [21] App]. No.:383,773

[52] U.S. Cl 100/33, 100/3, 100/34 [51] Int. Cl B65b 13/26 [58] Field ofSearch 100/3, 8, 34, 25, 26, 33; 140/101,111,114

[56] References Cited UNITED STATES PATENTS 3,020,827 2/1962 Luthi100/26 3,477,363 1l/1969 Trumbo 100/3 X Primary Examiner-Billy J.Wilhite Attorney, Agent, or Firm.lohn Harrow Leonard [57 ABSTRACT Aninverted channel-shaped guide is detachably supported on the under faceof the upper platen of a baling press. The guide is arranged to guideone preformed looped end of a bale tie wire to a knotting position inthe guide while the platen is in raised inactive position and to guidethe other preformed end loop of the wire into a knotting position withrespect to the first looped end when the platen is in baling position.Upon initially raising the platen and guide a short dis tance from thebale the expansion of the bale tensions the wire and pulls theinterengaged looped ends in a direction away from each other. therebydrawing them into a knot. Upon raising of the platen clear of the bale,the guide is released from the knotted wire. The first one of the loopedends is inserted in the guide axially of the wire from one end and thelooped end is guided by interior wall portions of the guide while theadjacent portion of the wire is held magnetically. by means of permanentmagnets carried by the guide. for axial movement in the insertingdirection while being permitted thereby to adjust about its axis. A dumpdoor is arranged at the open side of the guide at the knotting position.The door is spring biased to a closed position in which a cam and notchon its upper surface engage the first preformed looped end as it movesinto the knotting position and prevents movement of the wire opposite tothe direction of insertion. The door is opened downwardly against theforce of its biasing spring by the looped ends of the wire as the loopedends are being drawn tightly into a knot and the wire, due to axialtension imposed by the bale, is being moved downwardly toward the baleat and adjacent its knotted ends. When the platen and guide are liftedclear of the bale, the guide releases fully from the wire and the dumpdoor is reclosed by its spring.

10 Claims, 15 Drawing; Figures PATENTED FEB 4197s SHEET 2 OF 4 FIGB.

FIG-2.

IO, 34 f /34 I/IO FIG. 5.

FIG. 4.

all

WIRE TIE DEvicE BACKGROUND OF INVENTION I. Field of Invention Wire tiedevice.

2. Description of Prior Art As disclosed in my US. Pat. No. 3,477,363,of Nov. II, 1969, wire tie devices have been used in baling presses tofacilitate the tying together of the preformed looped ends of bale tiewire. As therein more fully disclosed, each wire tie device comprises aguide and holder in the form of an inverted channel mounted on theunderface of the upper platen of a conventional baling press so that thechannel is open toward the material being baled. The channel hasinterior guiding wall surfaces which guide one looped end of the wirefor movement endwise of the wire, looped end foremost, while retainingthe looped end portion in a properly oriented position about the wireaxis for connection to the other looped end of the wire when the latteris subsequently disposed in proper interengaging relation thereto. Theone looped end of the wire is inserted into the guide at its entranceand is then slid endwise, looped end foremost, along the guide until thelooped end engages a suitable stop which stops the inserted end at aknotting position. At the knotting position is a downwardly swingingdump door mounted on the channel. The dump door is spring biasedupwardly to a horizontal position in which it extends partway across theopen bottom of the guide in supporting relation to the looped end of thewire. The dump door, in its horizontal position, holds the wire inknotting position prior to and during the baling and knotting operation.

While the one looped end of the wire is thus held in knotting position,the upper platen moves to the baling position in whichthe guide ispressed down against the upper surface of the baled material. While theguide is held in this position, the other preformed looped end ofthewire is pushed into the other end ofthe guide and guided thereby intoknotting position in which the looped ends interengage in a manner suchthat when they are pulled away from each other .endwise of the wire, theloops are drawn into a knot. Upon raising of the upper platen, the baledmaterial expands and tensions the wire, pulling the looped ends of thewire away from each other, drawing them into a knot, and causing theknotted portion of the wire to move downwardly toward the bale.

The dump door is so arranged that it is swung downwardly out of itshorizontal position against the force of its'biasing spring by thisdownward component movement of the wire. As the upper platen and channelare lifted clear of the bale, the weight of the bale on the wire pullsthe wire downwardly transversely of its length clear of the guide.

One disadvantage in this structure is that a detent is required to holdthe one end of the wire in the proper longitudinal position and a seconddump door is required for cooperation with the detent. Likewise, thewire had to be inserted in a rotated position about its axis differentfrom that required for knotting. Therefore, a specialized type oforienting means had to be provided in the channel at a position beyondthe detent in the entry direction of the wire for engaging and rotatingthe wire about its axis to a properly oriented position.

In the present invention, the detent and second dump door areeliminated. Instead, the guide has a relatively free straight passage soshaped in cross section that the wire enters the guide looped endforemost in properly oriented position for knotting. It is constrainedto travel along the guide passage in properly oriented position relativeto the cross section of the guide passage by permanent magnets locatedat selected positions along the channel. When the looped end of the wirereaches knotting position, it engages a cam surface which cause it toenter a holding notch in the dump door. The holding notch constrains thewire from movement out of knotting position, so that the other loopedend can be guided into knotting position relative thereto as in theprior art.

SUMMARY The present invention is an improvement on the wire tie devicedisclosed in the above identified patent. The guide is such that thewire can enter only in substantially the rotated position about its axisnecessary to dispose the loop in the proper knotting position about itsaxis. During endwise insertion of the wire and movement of the loopedend to knotting position, the wire is held magnetically so that it can:readily orient and adjust itself to assure that the looped end isplaced in the proper position for knotting. When the looped end reachesknotting position, it is held securely in the position for properinterengagement with the opposite looped end of the wire, for beingdrawn into a knot. The opposite end of the wire is fed into the devicefrom the opposite end of the device in a direction opposite to that inwhich the first end was fed. The wire is readily pulled out of thedevice by the bale itself.

Various other objects and advantages of the invention will becomeapparent from the following description wherein reference is made to thedrawing.

BRIEF DESCRIPTION OF THE DRAWING FIG. 1 is a perspective view of thewire holder and guide embodying the principles of the present invention;

FIG. 2 is a cross sectional view of the holder and guide taken on theline 2-2 in FIG. 1, the initially inserted one of the looped ends of thewire to be knotted being indicated;

FIG. 3 is a right end elevation of the wire holder and guide illustratedin FIG. 1 and showing one looped end of the wire being inserted therein;

FIG. 4 is a left end elevation of the wire holder and guide and showingthe opposite looped end of the wire being inserted therein andinterengaged with the one looped end;

FIG. 5 is a cross sectional view of the device taken on the line 5-5 inFIG. 1;

FIG. 6 is a fragmentary longitudinal sectional view of the guide andholder, and is taken on the line 66 in FIG. 1, the one looped end of thewire approaching knotting position being indicated in solid lines andthe knotting position being indicated in dot and dash lines;

FIG. 7 is a perspective view of a dump door of the guide and holder,located at the knotting position;

FIG. 8 is a fragmentary top plan view of the guide showing the oppositeends of the wire in position for initiating interengagement forknotting;

99 of FIG. 8;

FIG. 10 is a view similar to FIG. 8 showing the wires approaching fullinterengaging position;

FIG. 11 is a vertical sectional view taken on the line 11ll of FIG. 10;

FIG. 12 is a view similar to FIG. 8 showing the wires fully interengagedand approaching full knotting position;

FIG. 13 is a vertical sectional view taken on the line l3l3 of FIG. 12;

FIG. 14 is a diagrammatic end view showing a conventional baling presswith several of the devices of the present invention carried by theupper platen thereof; and

FIG. 15 is a front elevation of the structure illustrated in FIG. 14.

Referring to the drawings, the guide and holding devices of the presentinvention are shown in FIGS. 14 and 15 as mounted in a baling press,indicated generally at 1, having a bolster 2 and an upper platen 3 whichis operated by a suitable hydraulic piston and cylinder assemblage 4 forcompressing material into a bale B. A plurality of upwardly openchannels 5 are mounted on the bolster for accommodating baling wires inthe selected positions along the underside of the bale. Guide and holderdevices embodying the present invention are mounted on the underface ofthe upper platen 3 and open downwardly toward, and are aligned,respectively, with, the channels 5.

Referring specifically to the illustrative example, the guide and holdercomprises a pair of laterally spaced parallel side walls 11 and 12 and atop wall 13 which provide a downwardly open channel, indicated at 14.Carried on the wall 11 in spacedrelation below the top wall 13 is aguide wall 15 which bridges across the major portion of the spacebetween the inner faces of the walls 11 and 12, thus defining adischarge slot 16 between the innermost edge of the guide wall 15 andthe wall 12.

The spacing of the walls 13 and 15 is such that the looped end of thewire can be disposed between these walls with the portion of the wireadjacent the loop lying close to the intersection of the inner faces ofthe wall 12 and top wall 13 in which position the wire is disposedabove, and in alignment transversely of its axis with, the notch 16, andcan drop readily therethrough when not restrained. The spacing of thetop wall 13 and guide wall 15 is such that the loop is held snuglyparallel to its knot forming position so long as the main length of thewire is engaged with the walls 13 and 12 adjacent their intersection.

In order to hold the main length of the wire adjacent the looped end inthis position, suitable permanent magnets are mounted in the walls ofthe guide. Preferably one permanent magnet 18 is mounted in the top wall13 near the right entry end of the channel 14. Another permanent magnet19 is mounted in the wall 12 near the same end. These magnets arearranged so that their inner faces are coplanar with the inner faces ofthe walls 12 and 13, respectively, and are near the intersection ofthese faces. Another permanent magnet 20 is mounted in the wall 12 sothat its inner face is adjacent the intersection of the inner face ofthe wall 12 with the wall 13. The magnet 20 is somewhat removed, endwiseof the guide, from the magnet 19. Thus the wire W is held parallel to aposition it is to assume during knotting. Due to the nature of magneticflux, the wire can be twisted about its axis, if necessary, while heldin position transversely of the cross section of the channel.

As disclosed in'the above patent, the'ends of a tie wire normally arelooped opposite from each other transversely of the wire axis and theloops, when formed, are bent out of their normal planes, respectively,in opposite directions so that the loops are biased to the axis of thewire in directions apart. In accordance with the present application,the one looped end of the wire is fed into the right end of the guidewhile disposed with its loop sloping from the main body of the wiredownwardly inwardly endwise of the guide, as illustrated in FIGS. 2 and6. As mentioned, the wall 15 is spaced relative to the wall 13 so thatwith the loop in this position and the main length of wire disposedagainst the walls 12 and 13 as near their intersection as the diameterof the wire permits, the wire can be slid lengthwise of the guide,looped end foremost,.without substantial rotation about the wire axis,the magnets affording sufficient holding power to assure that the mainlength of wire is retained in its proper position but allowing the wireto be rocked slightly about its axis to the extent that may be necessaryfor self-adjustment.

The top wall 13 and guide wall 15 terminate short of the opposite end ofthe guide, as indicated at 22, so that the portion of the wire, beingfed in from the right end, can deflect upwardly near the looped endportion as a result of the inherent resiliency of the wire.

Just beyond the ends of the walls 13 and 15, as indicated at 22, theguide is provided with a dump door 23 the upper surface 24 of which isflush with the upper surface of the wall 15 in the closed position ofthe door. The door 23 extends substantially the entire width of thechannel 14. The side wall 11 is cut out to provide a notch 25, whichextends from adjacent the end of the wall 15 to the opposite end of theguide door 23, and the wall 12 has a cut out portion or notch 26extending from the innermost end of the door or end of the wall 15entirely to the adjacent end of the guide. The notch 26 has a deflectingwall 26a at its inner end. The door 23 extends laterally of the guide,one edge extending into the notch 25. The door is hingedly secured atthe one edge to the wall 11 for rocking about the horizontal axis of ahinge pin 27. The door 23 is biased by a spring 28 to a position inwhich its upper face 24 is coplanar with the upper face of the wall 15.The door 23 has a lateral guide wall 29 projecting upwardly from theupper face 24 and an end abutment wall 30 which extends upwardly fromthe face 24 in a position to be engaged by the leading edge of thelooped end of the wire.

Mounted on the upper face 24 of the door 23 is a cam 31, the uppersurface of which slopes upwardly fron the face 24 in a direction towardthe wall 30 and which terminates, as indicated at 32, short of the wall30 and thereby provides a notch 33 into which the lower edge of the loopdrops, or snaps under the strain on the flexed wire, and by which theloop is held against axial movement to any appreciable extent.

Mounted on the inner face of the wall 11, in a position endwise of theguide near the cam 31, is a stop 34, the inner end surface of whichslopes downwardly in a direction toward the wall 30. This cam surface isarranged so that, as the leading end of the wire moves in the directionfrom the right end of the guide into knotting position, it is engaged bythe end face of the loop and assures that the loop cannot rise out ofthe notch 33 during interengagement of the looped ends of the wire.

The cam 31 is of such height that in order for the loop to passthereover into the notch 33, the loop is lifted and stresses the mainlength of the wire slightly vertically transversely of its axis, thedoor 23 yielding resiliently downwardly, if necessary, so that the loop,upon passing the high end of the cam 31, enters the notch 33 with a snapaction and is held in slightly stressed relation therein with the doorreturned to its normally closed or horizontal position. While the loopend of the wire is held in this position, the loop at the opposite endof the wire, which had been preformed by bending the wire transverselyof its axis in a direction 180 from the direction of bending to form thefirst mentioned loop, and which had been bent out of its plane in adirection opposite the first mentioned loop, can readily be interengagedwith the loop in the notch 33 in knotting position.

Referring to FIGS. 8 through 13, the looped end of the wire to beinserted from the left end of the guide is disposed with its loopsloping upwardly to the right and the main length of the wire adjacentthe loop is dis posed at the loop side of, and alongside the main lengthofthe wire first inserted from the right end of the guide, and with thefree end portion of the loop of the former wire and also the majorportion of the loop disposed in the notch 26. This relative position ofthe looped ends is shown in FIGS. 8 and J.

The workman, having disposed the left end of the wire in the positiondescribed, pushes the loop of the left end wire endwise of the guideuntil the end of the loop strikes the deflecting wall 26a, asillustrated in FIGS. 10 and 11, and then is deflected therebytransversely of the guide, as the endwise insertion is continued, untilthe free end portion of each loop is aligned with the passage throughthe loop so that, when the wire ends are pulled axially of the wire inopposite di' rections, the main length of the wire near each loop andthe free end of that loop pass through the other loop into the knottingposition illustrated in FIGS. 12 and 13. When the platen 3 is slightlyraised, the opposite ends of the wire are pulled further in a directionaway from each other by the pressure of the baled materal, and thelooped ends are drawn into a tight knot. The door 23 can yieldresiliently, as necessary to accommodate the wire ends during thisoperation.

When the wire is thus knotted, the platen 3 is lifted, carrying with itthe guide 10. The unlooped portions of the wire within the guide arepulled loose from the magnets and drop out through the notch 16, due tothe weight of the bale, the platen moves clear of the bale. The knottedportion of the wire moves downwardly against the dump door, swinging thedoor open against the force of itsbiasing spring, and lowering clear ofthe door, whereupon the door recloses.

It appears from the foregoing, therefore, that by virtue of using thepermanent magnets and the particular drop door, as described, the loopedend of the wire can be moved readily into knotting position, knotted bylifting the platen, and withdrawn from the guide without the necessityfor engaging the unlooped portions of the wire with mechanical means,such as the detents heretofore required, to hold the wire in properposition as it is moved along the guide. The magnets hold the wirefirmly during movement of the ends to knotting position, yet release thewire readily under the stress occasioned by the weight of the bale whenthe platen is lifted.

Having thus described my invention, 1 claim: 1.

1. A wire tie device for use with a baling press upon connection to theupper platen of the baling press for holding and guiding one end ofalength of bailing wire. having preformed loops at its ends,respectively, endwise with said one end foremost, into a knottingposition and for holding and guiding the other end of the length of wireinto an interengaged relation with the one end, when the platen is inbaling position with re spect to the material, so that the ends aredrawn into a knot by the pull of the ends in the opposite directions byexpansion of the baling material upon raising of the platen;

said device comprising a body having therein an elongated open invertedchannel open at opposite ends and defined by atop wall and dependingside walls spaced apart laterally of the top wall, and a guide wallcarried by one of said side walls and spaced below the top wall andextending transversely of the channel and terminating edgewise inlaterally spaced relation to the other side wall, thereby providing awire discharge passage;

said channel having a wire knotting station near one end; and

permanent magnet means carried by the body in lat erally spaced relationto said one side wall and spaced from said passage in a direction towardthe top wall, and operative while said one end of the wire is being fedloop end foremost to the knotting station to magnetically hold theportion of the length of wire which is between the loop of said one endof the wire and the other end of the channel in predetermined positionsrelative to the cross section of the body in which positions the wire isabove and aligned with said discharge passage and spaced from said oneside wall, and to hold the wire for movement of the wire endwise inopposite directions while it is in said predetermined positions.

2. A wire tie device according to claim 1 wherein the permanent magnetmeans are of sufficient strength to hold said unlooped portion at saidone end of the wire lightly juxtaposed against the inner face of saidother side wall near said other end of the channel.

3. A wire tie device according to claim 2 wherein said permanent magnetmeans are permanent magnets mounted in said other side wall.

4. A wire tie device according to claim 3 wherein an additionalpermanent magnet is mounted in said top wall near said other end of thebody in spaced relation to said one side wall and at least close to saidother side wall, so as to be aligned, in a direction from said top walltoward the open side of the channel, with said passage.

5. A wire tie device according to claim 3 wherein the permanent magnetshave their inner faces exposed at, and coplanar with said inner face ofsaid other side wall.

6. The structure according to claim 1 wherein said guide wall extendsfrom adjacent one end of the channel toward, but terminates in spacedrelation endwise to, the other end of the channel;

a dump door is carried by the body at said other end of the channeladjacent the end of the guide wall which is adjacent to said other endof the channel;

means support the door for swinging movement downwardly to an openposition relative to the open side of the channel;

spring means bias the door upwardly to a closed position relative to theopen side of the channel;

mechanical holding means are carried on the upper face of the door andare arranged to be engaged by the preformed looped end of said one endof the wire being fed endwise along the channel from said one end of thechannel when said latter looped end reaches the knotting station, andsaid mechanical holding means are operative when so engaged with saidlooped end of the wire to hold the wire in knotting position at theknotting station and to constrain the wire from endwise movement; and

means are provided in the channel for engaging the opposite looped endof the wire and guiding said opposite looped end and the wire adjacentthereto, looped end foremost, into knotting position relative to saidone looped end.

7. A wire tie device according to claim 6 wherein said mechanicalholding means include a cam surface on the upper face of the door, thecam surface is inclined upwardly in a direction toward said other end ofthe channel and the door carries a holding abutment at the higher end ofsaid cam surface, defined by an upwardly opening notch, for receivingthe loop of said one end and thereby effects said constraint of saidlast mentioned loop in the knotting position at the knotting station.

8. A wire tie device according, to claim 7 wherein the top wall of thechannel near said other end has a cam overhanging said door and slopingdownwardly in the direction toward said one end of the channel andpositioned to engage the looped end of said one end of the wire andforce it into the notch and constrain the loop from rising out of saidnotch.

9. A wire tie device for use with a baling press upon connection to theupper platen of a baling press for holding and guiding one end of alength of baling wire having preformed loops at its ends, respectively,into a knotting position while the platen is raised, and for holding andguiding the other end of the length of wire into an interengagedrelation with the one end when the platen is in baling position withrespect to the material, so that the ends are drawn into a knot by thepull of the ends in the opposite directions by expansion of the balingmaterial upon raising of the platen;

said device comprising a body having therein an elongated open invertedchannel open at opposite ends and defined by a top wall and dependingside walls spaced apart laterally of the top wall, and a guide wallcarried by one of said side walls and spaced below the top wall andextending transversely of the channel and terminating edgewise inlaterally spaced relation to the other side wall, thereby providing awire discharge passage;

said channel having a wire knotting station near one end;

said guide wall extending from adjacent one end of the channel toward,and terminating in spaced relation endwise to, the other end of thechannel;

a dump door carried by the body at said other end of the channeladjacent the end of the guide wall which is adjacent to said other endof the channel;

means supporting the door for swinging movement downwardly to an openposition relative to the open side of the channel;

spring means biasing the door upwardly to a closed position relative tothe open side of the channel;

mechanical holding means carried on the upper face of the door andarranged to be engaged by the preformed looped end of said one end ofthe wire being fed endwise along the channel from said one end of thechannel when said latter preformed looped end reaches said knottingstation, and when so engaged by said latter preformed looped end of thewire, to hold said latter preformed looped end of the wire in knottingposition at the knotting station; and

means in the channel for engaging the opposite looped end of the wireand guiding said opposite looped end of the wire, looped end foremost,into knotting position relative to the looped end of said one end of thewire.

10. A wire tie device according to claim 9 wherein said mechanicalholding means include a cam surface on the upper face of the door, thecam surface is inclined upwardly in a direction toward said other end ofthe channel and the door carries a holding abutment at the higher end ofsaid cam surface, defined by an upwardly opening notch, for receivingthe loop of said one end and thereby effects said contraint of said lastmentioned loop in the knotting position at the knotting station.

1. A wire tie device for use with a baling press upon connection to theupper platen of the baling press for holding and guiding one end of alength of bailing wire, having preformed loops at its ends,respectively, endwise with said one end foremost, into a knottingposition and for holding and guiding the other end of the length of wireinto an interengaged relation with the one end, when the platen is inbaling position with respect to the material, so that the ends are drawninto a knot by the pull of the ends in the opposite directions byexpansion of the baling material upon raising of the platen; said devicecomprising a body having therein an elongated open inverted channel openat opposite ends and defined by a top wall and depending side wallsspaced apart laterally of the top wall, and a guide wall carried by oneof said side walls and spaced below the top wall and extendingtransversely of the channel and terminating edgewise in laterally spacedrelation to the other side wall, thereby providing a wire dischargepassage; said channel having a wire knotting station near one end; andpermanent magnet means carried by the body in laterally spaced relationto said one side wall and spaced from said passage in a direction towardthe top wall, and operative while said one end of the wire is being fedloop end foremost to the knotting station to magnetically hold theportion of the length of wire which is between the loop of said one endof the wire and the other end of the channel in predetermined positionsrelative to the cross section of the body in which positions the wire isabove and aligned with said discharge passage and spaced from said oneside wall, and to hold the wire for movement of the wire endwise inopposite directions while it is in said predetermined positions.
 2. Awire tie device according to claim 1 wherein the permanent magnet meansare of sufficient strength to hold said unlooped portion at said one endof the wire lightly juxtaposed against the inner face of said other sidewall near said other end of the channel.
 3. A wire tie device accordingto claim 2 wherein said permanent magnet means are permanent magnetsmounted in said other side wall.
 4. A wire tie device according to claim3 wherein an additional permanent magnet is mounted in said top wallnear said other end of the body in spaced relation to said one side walland at least close to said other side wall, so as to be aligned, in adirection from said top wall toward the open side of the channel, withsaid passage.
 5. A wire tie device according to claim 3 wherein thepermanent magnets have their inner faces exposed at, and coplanar withsaid inner face of said other side wall.
 6. The structure according toclaim 1 wherein said guide wall extends from adjacent one end of thechannel toward, but terminates in spaced relation endwise to, the otherend of the channel; a dump door is carried by the body at said other endof the channel adjacent the end of the guide wall which is adjacent tosaid other end of the channel; means support the door for swingingmovement downwardly to an open position relative to the open side of thechannel; spring means bias the door upwardly to a closed positionrelative to the open side of the channel; mechanical holding means arecarried on the upper face of the door and are arranged to be engaged bythe preformed looped end of said one end of the wire being fed endwisealong the channel from said one end of the channel when said latterlooped end reaches the knotting station, and said mechanical holdingmeans are operative when so engaged with said looped end of the wire tohold the wire in knotting position at the knotting station and toconstrain the wire from endwise movement; and means are provided in thechannel for engaging the opposite looped end of the wire and guidingsaid opposite looped end and the wire adjacent thereto, looped endforemost, into knotting position relative to said one looped end.
 7. Awire tie device according to claim 6 wherein said mechanical holdingmeans include a cam surface on the upper face of the door, the camsurface is inclined upwardly in a direction toward said other end of thechannel and the door carries a holding abutment at the higher end ofsaid cam surface, defined by an upwardly opening notch, for receivingthe loop of said one end and thereby effects said constraint of saidlast mentioned loop in the knotting position at the knotting station. 8.A wire tie device according to claim 7 wherein the top wall of thechannel near said other end has a cam overhangIng said door and slopingdownwardly in the direction toward said one end of the channel andpositioned to engage the looped end of said one end of the wire andforce it into the notch and constrain the loop from rising out of saidnotch.
 9. A wire tie device for use with a baling press upon connectionto the upper platen of a baling press for holding and guiding one end ofa length of baling wire having preformed loops at its ends,respectively, into a knotting position while the platen is raised, andfor holding and guiding the other end of the length of wire into aninterengaged relation with the one end when the platen is in balingposition with respect to the material, so that the ends are drawn into aknot by the pull of the ends in the opposite directions by expansion ofthe baling material upon raising of the platen; said device comprising abody having therein an elongated open inverted channel open at oppositeends and defined by a top wall and depending side walls spaced apartlaterally of the top wall, and a guide wall carried by one of said sidewalls and spaced below the top wall and extending transversely of thechannel and terminating edgewise in laterally spaced relation to theother side wall, thereby providing a wire discharge passage; saidchannel having a wire knotting station near one end; said guide wallextending from adjacent one end of the channel toward, and terminatingin spaced relation endwise to, the other end of the channel; a dump doorcarried by the body at said other end of the channel adjacent the end ofthe guide wall which is adjacent to said other end of the channel; meanssupporting the door for swinging movement downwardly to an open positionrelative to the open side of the channel; spring means biasing the doorupwardly to a closed position relative to the open side of the channel;mechanical holding means carried on the upper face of the door andarranged to be engaged by the preformed looped end of said one end ofthe wire being fed endwise along the channel from said one end of thechannel when said latter preformed looped end reaches said knottingstation, and when so engaged by said latter preformed looped end of thewire, to hold said latter preformed looped end of the wire in knottingposition at the knotting station; and means in the channel for engagingthe opposite looped end of the wire and guiding said opposite looped endof the wire, looped end foremost, into knotting position relative to thelooped end of said one end of the wire.
 10. A wire tie device accordingto claim 9 wherein said mechanical holding means include a cam surfaceon the upper face of the door, the cam surface is inclined upwardly in adirection toward said other end of the channel and the door carries aholding abutment at the higher end of said cam surface, defined by anupwardly opening notch, for receiving the loop of said one end andthereby effects said contraint of said last mentioned loop in theknotting position at the knotting station.